Improvement in hot-bed-sash ventilators



E. C. SBAMEN. Hot-Bed Sash-Ventilators.

10.216,487. Patented June1o 1s379.

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".FETERS, PHUTOMYHOGHAPHER. WASHINGTON. D c,

the city and county of Philadelphia, in thc position on said frame, thus providing for an sashes being effected by means of the sliding UNITED STATES EBEE C. SEAMEN, OF PHILADELPHIA,

HALF HIS RIGHT TO CHARLES PENNSYLVANIA, AssIGNoE or ONE- H. vAUTrEE, or sAME PLAGE.

IMPROVEMENT IN HOT-BED-SASH VENTILATORS.

Speciication forming part of Letters Patent No.

August To all whom it may concern:

Be it known that I, EBEE C. SEAMEN, of

State of Pennsylvania, have invented a new and useful Improvement in Hot-Bed Sash Ventilators, of which the following is a specication.

My invention consists in the combination of a reciprocating bar, having dependent brackets at one of its sides, with hangers' at its adjacent side, which are projected downward from head-blocks of gallows-frames ofthe hotbed frame, and with the connecting-rods of the sashes of the said frame, the brackets of the `bar having an offset, for the purpose of clearing hook projections of the hangers of the gallowsframes as they pass them in the reciprocating movements of the bar for raising and lowering the sashes, as hereinafter fully described. a

In the accompanying drawings, Figure l is an isometrical view of the frame A, for containing a hot-bed, and parts connected therewith. Fig. 2 is an end elevation of the same. Figs. 3 and 4 are a top view and side elevation of the bracket P and friction-roller Q1 Figs. 5 and 6 are a front and side elevation of a hanger, E', having a roller, Q.

Like letters of reference in all the figures indicate the same parts.

A is a rectangular frame, which incloses a hot-bed. It is covered by means of sectional sashes B, that have any desirable number of panes of glass, C, for the passage of the rays of` heat and light from the sun. The sashes are hinged or pivoted at one end to the longitudinal timbers of the frame A, so as to admit of an oscillatory movement, to brin g them to a perpendicular position or to any desired angle, and of their being lowered to their fixed expeditious uncovering of the beds for the reception of rain when required, or for the cultivation of the plants, or the gathering of the products, the oscillatory movements of the bar D, supported by hangers E, coniined to the head-pieces of the gallows-frames G, the lower ends of which are confined to side timi. friction-rollers Q.

216.487, dated Jaaa 10,1879; applicati@ med bers of the bed-frame A. These hangers E are of 'a hook shape, as represented in the drawings, for the support of the bar at the lower edge, the adjacent side of the bar resting against the corresponding side of the hangers.

The opposite side of the bar is provided with dependent brackets a, with which the upper ends of the connecting-rods H of the sashes B are attached. The said brackets a have an offset, e, to admit of their clearing the hook projections of the hangers E in the reciprocating movements of the bar D for raising and lowering the sashes.

One end of the sliding bar D is provided with a rack, J, and is supported by a bracket, b, on one of the vertical timbers of the pedestal K.

L is a driving-shaft, which is provided with a crank, d. The shaftis provided with a trundle, M, or a spur-wheel, which gears into the spur-wheel N on the shaft O. N' is a pinion on said shaft, which gears into the abovementioned rack. By this gearing a slow inotion is communicated to the sliding bar, so as to require only a moderate amount of power for elevating the sashes.

It will be understood that as the sliding bar D is moved in the direction of the arrows by the means just described the connecting-rods H and the fly-edges of the sashes B are drawn upward until the sashes assume a perpendicular or any desired inclined position, and that by a reverse movement of the bar they are returned to their fixed position upon the bed'- frame A.

The bracket P, having a friction-roller, Q, (shown in Figs. 3 and 4,)maytake place of the bracket b, for supporting the rack end of the sliding bar I), the tlat side of the bracket in such case being permanently confined to the pedestal; and hangers E', as shown in Figs. 5 and 6,1naytake the place of the hanger E, so as to cause the bar D to rest upon the Instead of the pivots d of the sashes B being placed in bearings f, open at top, the bearings may be closed all around them.

I claim as my inventionl. lThe combination ofthe reciprocating bar b, hangers E, rods H, and sash-frames B, sub- D7 having dependent brackets a, with the stantially in the manner and for the purpose hangers E and the connecting-rods H, the set forth. brackets a having an oset, e, for clearing the hangers E in the reciprocating movements of EBEE C SEAMEN' the bar, substantially as set forth. v Witnesses:

2. The combination of the reciprocating bar THOMAS J. BEWLEY, D, provided with brackets a, with the bracket STEPHEN UsTICK. 

